I flew out of Duxford for one or two years so feel reasonably qualified to comment.
My comment is why didn't you saunter down to ARC and have a cup of tea with the pilot concerned to find out what was the hiccup his end? Was there a prob with his pax/student? Was there a problem with his aircraft/engine? Was there a problem with his radio? A 'one to one' between gentlemen would have sorted this out in a heartbeat without berating someone via this website.
Take some chill pills and enjoy your weekend.
Alan Walker
(Happy to identify myself)